Rod-cutting device.



R. E. ROSEWARNE.

ROD CUTTING DEVICE.

APPLICATION r1150 MAR. 14. 1912.

WNW/5555s w W A R. E. ROSEWARNE. ROD CUTTING DEVICE.

APPLICATION FILED MAR. 14, 1912.

1,146,657, 1 Patented July 13, 191.5.

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R. E. ROSEWARNE. ROD CUTTING DEVICE.

APPLICATION FILED MAR. 14, 1912.

1 146,657, Patented July 13, 1915.

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WITNESSES R. E. ROSEWARNE.

ROD CUTTING DEVICE.

APPLICATION FILED MAR. 14, 1912.

1,1,57.a Patented July 13, 1915.

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. Specification of Letters Patent.

RICHARD E. ROSEWARNE, 0F covnvcr'olv, KENTUCKY, AssIGNoR TO THE MILLER,

DU BRUL AND PETERS MANUFACTURING (10;, OF CINCINNATI, OHIO, A COR- IPORATION OF OHIO,

Patented July 13,1915.

Application filed. March 14, 1912. Serial No. 683,844.

To all whom it may concern Be it known that I, RICHARD E. Ross- WARNE, a citizen of the United States, residing at No. 2023 Madison avenue, Covington, county of Kenton, and State of Kentucky, have invented'certain new and useful Improvements in Rod-Cutting Devices, of \vhich the following is a specification.

This invention relates to cutting devices such as are disclosed in my Patent 1,095,599, of May 5, 1914, in which an object or material manufactured in continuous form or in long lengths, has to be subdivided to produce individual articles, and particularly to that class of such devices in which the object to be subdivided is fed constantly past a cutting point at which the line of feed is intersected by a cutter.

One feature of my invention consists of a severing device comprising a driven shaft mounted to rotate upon and to reciprocate in the direction of its true axis, having a crank pin at one end of the shaft on which is journaled a sleeve carrying a rotary cutter and also carrying means to impart rotation to the said sleeve and cutter. By this arrangement only the cutter and its accompanying parts which are of relatively light construction, and, therefore, of low inertia, receive the oscillation which develops the cutting stroke, while the relatively heavier operating parts of the severing device receive only axial reciprocation in addition to their rotation; this latter movement being preferably developed by means of a rotary cam carried by the shaft.

Another feature is to provide an adjustable cutting ledge in connection with an orbitally moving cutter.

A further feature of my invention 0011* sists in developing the edge movement of the cutter from an orbital movement.

A further feature consists in providing adjustment for the device as a whole relative to the path of the rod.

Further features relate to the construction of the several parts whereby they may be conveniently assembled in exact relation.

An illustrative embodiment of the rod severing device designed as a unit, for embodiment in any appropriate machine, is disclosed in the accompanying drawings, and theinvention will be fully understood upon reference to said drawings, in which,

rotating mechanism; and Fig. 7 is a longitudinal section of the revolving and axially reciprocating mounting for the cutter and cutting ledge, the section being taken in a plane extending through the main axis of revolution of the parts and through the sub sidiary axis of rotation of the knife.

The table 1 is of any form convenient for attachment to a machine. On table 1 is mounted a base 3 which supports the operating parts. Said base is positioned upon the table by a tongue 6, or other means to insure true alinement of the severing device with the line of feed. The base is adjustable transversely of the table to bring the severing cutter (when reduced by repeated sharpening) into proper intersection with the line of feed, and the cutting ledges have to be correspondingly adjusted. This transverse adjustment is accurately effected by a handscrew 7, and the base, after such adjustment,

is interlocked with the table by bolts 8 extending through vertical bores ofthe base and slots 8 in the table.

As will be understood more clearly from Figs. 3 and 4, it is necessary to have the cutter 4 intersect the line of feed represented by the supporting guides 2 and 5 at rapidly recurring and accurately measured intervals. For this purpose, the cutter 4, while rotatable on its own true axis, is mounted eccentrically to a center of revolution 0 and is made to revolve about that center in a continuous orbital path so that at each revolution, it crosses the line 'of feed. It is also important that the cutter 4, in addition to this orbital travel, receive rapid edge movement, or travel upon its own true axis, for which purpose the cutter is rotatably mounted upon a crank pin 9 means being provided for rotating said cutter upon said crank pin as are more fully described herein.

This necessitates an axial reciprocation of the cutter and its associated parts, as well as the cutting ledges 2 and 5.

To insure the several functions ascribed to the cutter and its associated parts, it is mounted as follows: The base 3 supports a yoke 13, constructed with bearings 14:, 14 for a shaft 15, mounted to revolvein, and also to axially reciprocate in said bearings; said shaft 15 carrying at one end the crank pin 9 eccentrically disposed to the center of revolution 0. Revolving on crank pin 9* is a sleeve P on which the rotary cutter is mounted, by clamping it between the collars or disks 4:", grippedbetween nuts 49 and I shoulder 4, formed on the sleeve 4, this sleeve is rotatably confined on said crank pin 9 by the nuts 9 A driving pinion 16, (hereinafter called a change gear on the shaft 15, meshes with and is driven through idler gear 17, which is driven by a master gear 18 on the main shaft 19. The shaft 15 is further provided with a cam 20 coaxial with the shaft, with its pitch constructed in the direction of the axis of the shaft and c0- acting with a pair of rollers 21, rotating upon fixed axes, presented radially to the cam and held by screws 21 in the yoke 13 so that as the cam revolves, there is imparted to the shaft 15, anaxial reciprocation having a speed corresponding accurately to the travel of the rod during its intersection by the cutter. The pinion 16 is in clutched abutment, as shown in Fig. 2, with the cam 20 that is fixed by key 20* on shaft 15, and.

is thereby in driving relation with said cam and through it with the shaft 1.5. This pinion is called a change gear because aseries of such pinions of different diameters are interchangeably adapted to the shaft 15 in order that the period of rotation of the shaft, and therefore of the cutting stroke of the cutter 4:, may be varied at will to suit the length of the article to be severed. To

admit pinions 16 of different sizes, and also,

to permit the adjustment of the device to x the line of feed, idler 17 is adjustable to and from the axis 0, by means of 'a supporting arm 17 pivoted at 17", to carry the stub shaft 17 for said idler, and adjustably held by the bolts 17 working in slots 17, in the said supporting armQ I In the operation of a rod cutting machine, it is essential that a relatively delicate rod be well supported during the cutting stroke of the cutter and for that reason the cutting ledges must be moved in axial alinement with the rod, and at the same speed during the cutting operation. To carry the cutting ledges 5 and 2, I provide a non-rotating head 12 having a sleeve 12 forming a bearing for the shaft 15 and reciprocating in bearing 1%? of yoke 13; said head being axially confined between a shoulder or disk head 9 and nut 15 (see Fig. 7 so as to be axially reciproledge 5 is likewise supported by the non-.

rotating but reciprocating head 12; the latter being -constructed with a bracket or lug 5 for that purpose. As will be seen from Figs. 1 and 5 the cutting ledge is divided into two parts 5*, 5 to admit the cutter between them, and secured in a casting 5 by set screws 5 saidcasting being secured on the bracket or lug 5 bya bolt 5 working in slot 5 (Figs. 1 and 5) releasably to permit the axis 0 to be adjusted toward the line of feed in order to compensate for changes in diameter of cutter, incident to wear, regrinding or substitution of cutter.

To provide for rotation of the cutter, various methods may be employed, according to the speed which may be required of the cutter in cutting different material or forms of rods. Sometimes it is desirable to run the cutter at a greater speed than at other times. One method is to derive the rotary motion of the cutter from the orbital motion of the crank pin itself, and to do this, I-prefremovable) and on the end of sleeve 4 on which cutter 4c is mounted, 1 form a pinion 10, meshing with said gear 11, whereby the sleeve and the attached cutter are rotated by the revolution of the shaft 15.

It will be understood that friction or any other suitable means may be used instead of gearing to generate rotary motion of the cutter from the orbital motion of the crank pin without departing from the scope of my invention.

- The above method, while self-contained, does not, in some cases, produce a sufficiently high speed of the cutter and it also rotates the cutter in the direction opposite to the orbital path of the cutter in its cutting stroke. To secure higher speeds, or to secure a contrary direction of cutter rotation in cases where necessary, I provide a modification, as shown in Fig. 6, by simply removing the internal gear 11 from the head 12 and mounting on sleeve 4: a small pulley 10 the hub be seen that the non-rotating head 12 with its sleeve 12 is first slid-over the shaft until arrested by the shaft shoulder 9, after Which a wearing Washer 12 in clutched connection with the sleeve 42 and therefore.

held in compact columnso that all will reciprocate together longitudinally, but so that the shaft 15, together with the cam 20, driven by the pinion 16 will rotatetogether in addition to reciprocating, but, without rotating the head 12. Arm 14:of yoke 13 may be removably attached by bolts 14: to facili' tate the removal ofthe change gear.16 and cam when necessary, I

A rod cutting device constructed as herein specified is found to operate with a minimum of jar and vibration because it elimiv nates themomentum caused by reciprocating comparatively heavy non-rotating parts as heretofore used and substitutes therefor longitudinal reciprocation of relativelylight parts, all being in rotary motion, except the head 12, which carries the cutting ledge. Experience shows that the. rotation of the cutter by means of gearing contained in this head 12 is of great practical advantage wherever this system of rotation is applicable. This system, besides carrying the cutting ledges in an eminently satisfactory manner, provide a severing device that, is extremely simple and efficient, deriving both the cutter rotation and. the longitudinal reciprocation from asingle source of power through the change gear 16. Where the belt driven cutter motion is preferable for any reason, my construction illustrated in The change (pinion 16 is then Fig. 6. with the belt pulley P is-a simple and inexpensive modification which has been found to be of great benefit in practical use.

I claim I 1. In a rod cutting device, the combination of a revoluble shaft-having a crank pin integral therewith and projecting parallel to the shaft, means for imparting rotation to the shaft thereby developing an orbital movement of the crank pin around the axis ofv said-shaft, a sleeve onthecrank pin, a cutter rigidly secured on said sleeve, and means for imparting rotation to said sleeve relative to said crank pin.

2. In a rod cutting device, the combination of a shaft having an enlarged head and 1 a crank pin integral therewith projecting parallel to the shaft, means for imparting rotation to the shaft whereby it develops an orbital movement of the crank pin around the axis of said shaft, a sleeve loosely mounted on said crank pin, a cutter rigidly mounted on said'sleeve and means for imparting rotation to said sleeve, and cutter.

3. In a rod cutting device, the combination of a rotary shaft having an enlarged head and a crank pin integral therewith, a loose sleeve on said crank pin, a cutter carried rigidly by said sleeve and receiving an orbital movement'around the axis of said shaft, a non-revoluble bearing-member for v said shaft and means for holding said bearing member continuously against said head,.

means for imparting axial reciprocation to said shaft through said head and said bearing member, and means for imparting rotation to said sleeve relatively to said shaft, said sleeve being provided with teeth and said bearing member having corresponding teeth in mesh with said first teeth.

The foregoing specification signed at Cmcinnati, Ohio, this 9th day of February,

RICHARD E. ROSEWARNE.

In presence of- DAVILA S. DU BRUL,

HARRY WHYRICH. 

